Losses of nitrogen, phosphorus, and sediment in runoff from hill country under different fertiliser and grazing management regimes

References

• Ball , Roger. , Brougham , R. W. , Brock , J. L. , Crush , J. R. , Hoglund , J. H. and Carran , R. A. 1979 . Nitrogen fixation in pasture. I. Introduction and general methods . New Zealand journal of experimental agriculture , 7 : 1 – 5 .
   Web of Science ®Google Scholar
• Ball , P. R. and Ryden , J. C. 1984 . Nitrogen relationships in intensively managed temperature grasslands . Plant and soil , 76 : 23 – 33 .
   Web of Science ®Google Scholar
• Bargh , B. J. 1978 . Output of water, suspended sediment, and phosphorus and nitrogen forms from a small agricultural catchment . New Zealand journal of agricultural research , 21 : 29 – 38 .
   Web of Science ®Google Scholar
• Brown , Michael W. 1973 . A highly sensitive automated technique for the determination of ammonium nitrogen . Journal of the science of food and agriculture , 24 : 1119 – 1123 .
   Web of Science ®Google Scholar
• Field , T. R. O. , Ball , P. R. and Theobald , P. W. 1985 . Leaching of nitrate from sheep-grazed pastures . Proceedings of the New Zealand Grassland Association , 46 : 209 – 214 .
   Google Scholar
• Geib , H. V. 1933 . A new type of installation for measuring soil and water losses from control plots . Journal of the American Society of Agronomy , 25 : 429 – 440 .
   Google Scholar
• Henzell , E. F. , Vallis , I. and Lindquist , J. E. 1968 . “ Automatic colorimetric methods for the determination of nitrogen in digests and extracts of soil ” . In Paper no. 53 , Australia : CSIRO .
   Google Scholar
• Lambert , M. G. , Luscombe , P. C. and Clark , D. A. 1982a . Soil fertility and hill country production . Proceedings of the New Zealand Grassland Association , 43 : 153 – 160 .
   Google Scholar
• Lambert , M. G. , Renton , S. W. and Grant , D. A. 1982b . “ Nitrogen balance studies in some North Island hill pastures ” . In Nitrogen balances in New Zealand ecosystems , New Zealand : DSIR .
   Google Scholar
• Lambert , M. G. , Clark , D. A. , Grant , D. A. , Costall , D. A. and Fletcher , R. H. 1983 . Influence of fertiliser and grazing management on North Island moist hill country. I. Herbage accumulation . New Zealand journal of agricultural research , 26 : 95 – 108 .
   Web of Science ®Google Scholar
• McColl , R. H. S. , White , E. and Gibson , A. R. 1977 . Phosphorus and nitrate runoff in hill pasture and forest catchments, Taita, New Zealand . New Zealand journal ofmarine and freshwater research , 11 : 729 – 744 .
   Web of Science ®Google Scholar
• McColl , R. H. S. and Syers , J. K. 1981 . “ The effects of agriculture ” . In The effects of land use on water quality — a review. Water and soil miscellaneous publication 23 , 59 Wellington : Ministry of Works and Development . In: McColl, R. H. S.; Hughes, Helen R. compilers
   Google Scholar
• New Zealand Meat and Wool Board Economic Service . 1984 . “ New Zealand Meat and Wool Board's Economic Service supplement to the sheep and beef farm survey 1981–82 ” . In Publication no. 1893
   Google Scholar
• Russell , E. W. 1973 . Soil conditions and plant growth , 10 , 849 New York : Longman Inc. .
   Google Scholar
• Sapek , A. and Sapek , B. 1976 . The determination of phosphorus in environmental waters by the indirect atomic adsorption spectroscopy method . Scan , 1976 ( 7 ) : 10 – 11 .
   Google Scholar
• Sharpley , A. N. and Syers , J. K. 1976 . Potential role of earthworm casts for the phosphorus enrichment of run-off waters . Soil biology and biochemistry , 8 : 341 – 346 .
   Web of Science ®Google Scholar
• Terrey , D. R. 1966 . An automated absorption method for the determination of nitrate . Analytica chimica acta , 34 : 41 – 45 .
   Web of Science ®Google Scholar
• Williams , G. H. and Twine , J. R. 1967 . “ Determination of nitrogen, sulphur, phosphorus, potassium, sodium, calcium, and magnesium in plant materials by automatic analysis ” . In Division of Plant Industry technical paper no. 24 , Australia : CSIRO .
   Google Scholar
• Yates , M. E. 1971 . Effects of cultural changes on Makara experimental basin: hydrological and agricultural production effects of two levels of grazing on unimproved and improved small catchments . Journal of hydrology (New Zealand) , 10 : 59 – 84 .
   Google Scholar